-/* Driver for SCM Microsystems USB-ATAPI cable
+/* Driver for SCM Microsystems (a.k.a. Shuttle) USB-ATAPI cable
*
* $Id: shuttle_usbat.c,v 1.17 2002/04/22 03:39:43 mdharm Exp $
*
* Current development and maintenance by:
* (c) 2000, 2001 Robert Baruch (autophile@starband.net)
+ * (c) 2004, 2005 Daniel Drake <dsd@gentoo.org>
*
* Developed with the assistance of:
* (c) 2002 Alan Stern <stern@rowland.org>
*
+ * Flash support based on earlier work by:
+ * (c) 2002 Thomas Kreiling <usbdev@sm04.de>
+ *
* Many originally ATAPI devices were slightly modified to meet the USB
* market by using some kind of translation from ATAPI to USB on the host,
* and the peripheral would translate from USB back to ATAPI.
* as well. This driver is only guaranteed to work with the ATAPI
* translation.
*
- * The only peripheral that I know of (as of 27 Mar 2001) that uses this
- * device is the Hewlett-Packard 8200e/8210e/8230e CD-Writer Plus.
+ * See the Kconfig help text for a list of devices known to be supported by
+ * this driver.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
+#include "usb.h"
#include "transport.h"
#include "protocol.h"
-#include "usb.h"
#include "debug.h"
#include "shuttle_usbat.h"
#define LSB_of(s) ((s)&0xFF)
#define MSB_of(s) ((s)>>8)
-int transferred = 0;
+static int transferred = 0;
+
+static int usbat_flash_transport(struct scsi_cmnd * srb, struct us_data *us);
+static int usbat_hp8200e_transport(struct scsi_cmnd *srb, struct us_data *us);
+
+/*
+ * Convenience function to produce an ATA read/write sectors command
+ * Use cmd=0x20 for read, cmd=0x30 for write
+ */
+static void usbat_pack_ata_sector_cmd(unsigned char *buf,
+ unsigned char thistime,
+ u32 sector, unsigned char cmd)
+{
+ buf[0] = 0;
+ buf[1] = thistime;
+ buf[2] = sector & 0xFF;
+ buf[3] = (sector >> 8) & 0xFF;
+ buf[4] = (sector >> 16) & 0xFF;
+ buf[5] = 0xE0 | ((sector >> 24) & 0x0F);
+ buf[6] = cmd;
+}
+
+/*
+ * Convenience function to get the device type (flash or hp8200)
+ */
+static int usbat_get_device_type(struct us_data *us)
+{
+ return ((struct usbat_info*)us->extra)->devicetype;
+}
+/*
+ * Read a register from the device
+ */
static int usbat_read(struct us_data *us,
unsigned char access,
unsigned char reg,
unsigned char *content)
{
- int result;
-
- result = usb_stor_ctrl_transfer(us,
+ return usb_stor_ctrl_transfer(us,
us->recv_ctrl_pipe,
- access,
+ access | USBAT_CMD_READ_REG,
0xC0,
(u16)reg,
0,
content,
1);
-
- return result;
}
+/*
+ * Write to a register on the device
+ */
static int usbat_write(struct us_data *us,
unsigned char access,
unsigned char reg,
unsigned char content)
{
- int result;
-
- result = usb_stor_ctrl_transfer(us,
+ return usb_stor_ctrl_transfer(us,
us->send_ctrl_pipe,
- access|0x01,
+ access | USBAT_CMD_WRITE_REG,
0x40,
short_pack(reg, content),
0,
NULL,
0);
+}
- return result;
+/*
+ * Convenience function to perform a bulk read
+ */
+static int usbat_bulk_read(struct us_data *us,
+ unsigned char *data,
+ unsigned int len,
+ int use_sg)
+{
+ if (len == 0)
+ return USB_STOR_XFER_GOOD;
+
+ US_DEBUGP("usbat_bulk_read: len = %d\n", len);
+ return usb_stor_bulk_transfer_sg(us, us->recv_bulk_pipe, data, len, use_sg, NULL);
+}
+
+/*
+ * Convenience function to perform a bulk write
+ */
+static int usbat_bulk_write(struct us_data *us,
+ unsigned char *data,
+ unsigned int len,
+ int use_sg)
+{
+ if (len == 0)
+ return USB_STOR_XFER_GOOD;
+
+ US_DEBUGP("usbat_bulk_write: len = %d\n", len);
+ return usb_stor_bulk_transfer_sg(us, us->send_bulk_pipe, data, len, use_sg, NULL);
+}
+
+/*
+ * Some USBAT-specific commands can only be executed over a command transport
+ * This transport allows one (len=8) or two (len=16) vendor-specific commands
+ * to be executed.
+ */
+static int usbat_execute_command(struct us_data *us,
+ unsigned char *commands,
+ unsigned int len)
+{
+ return usb_stor_ctrl_transfer(us, us->send_ctrl_pipe,
+ USBAT_CMD_EXEC_CMD, 0x40, 0, 0,
+ commands, len);
+}
+
+/*
+ * Read the status register
+ */
+static int usbat_get_status(struct us_data *us, unsigned char *status)
+{
+ int rc;
+ rc = usbat_read(us, USBAT_ATA, USBAT_ATA_STATUS, status);
+
+ US_DEBUGP("usbat_get_status: 0x%02X\n", (unsigned short) (*status));
+ return rc;
+}
+
+/*
+ * Check the device status
+ */
+static int usbat_check_status(struct us_data *us)
+{
+ unsigned char *reply = us->iobuf;
+ int rc;
+
+ if (!us)
+ return USB_STOR_TRANSPORT_ERROR;
+
+ rc = usbat_get_status(us, reply);
+ if (rc != USB_STOR_XFER_GOOD)
+ return USB_STOR_TRANSPORT_FAILED;
+
+ /* error/check condition (0x51 is ok) */
+ if (*reply & 0x01 && *reply != 0x51)
+ return USB_STOR_TRANSPORT_FAILED;
+
+ /* device fault */
+ if (*reply & 0x20)
+ return USB_STOR_TRANSPORT_FAILED;
+
+ return USB_STOR_TRANSPORT_GOOD;
}
+/*
+ * Stores critical information in internal registers in prepartion for the execution
+ * of a conditional usbat_read_blocks or usbat_write_blocks call.
+ */
static int usbat_set_shuttle_features(struct us_data *us,
unsigned char external_trigger,
unsigned char epp_control,
unsigned char subcountH,
unsigned char subcountL)
{
- int result;
unsigned char *command = us->iobuf;
command[0] = 0x40;
- command[1] = 0x81;
+ command[1] = USBAT_CMD_SET_FEAT;
+
+ /*
+ * The only bit relevant to ATA access is bit 6
+ * which defines 8 bit data access (set) or 16 bit (unset)
+ */
command[2] = epp_control;
+
+ /*
+ * If FCQ is set in the qualifier (defined in R/W cmd), then bits U0, U1,
+ * ET1 and ET2 define an external event to be checked for on event of a
+ * _read_blocks or _write_blocks operation. The read/write will not take
+ * place unless the defined trigger signal is active.
+ */
command[3] = external_trigger;
+
+ /*
+ * The resultant byte of the mask operation (see mask_byte) is compared for
+ * equivalence with this test pattern. If equal, the read/write will take
+ * place.
+ */
command[4] = test_pattern;
+
+ /*
+ * This value is logically ANDed with the status register field specified
+ * in the read/write command.
+ */
command[5] = mask_byte;
+
+ /*
+ * If ALQ is set in the qualifier, this field contains the address of the
+ * registers where the byte count should be read for transferring the data.
+ * If ALQ is not set, then this field contains the number of bytes to be
+ * transferred.
+ */
command[6] = subcountL;
command[7] = subcountH;
- result = usb_stor_ctrl_transfer(us,
- us->send_ctrl_pipe,
- 0x80,
- 0x40,
- 0,
- 0,
- command,
- 8);
-
- return result;
-}
-
-static int usbat_read_block(struct us_data *us,
- unsigned char access,
- unsigned char reg,
- unsigned char *content,
- unsigned short len,
- int use_sg)
-{
- int result;
- unsigned char *command = us->iobuf;
-
- if (!len)
- return USB_STOR_TRANSPORT_GOOD;
-
- command[0] = 0xC0;
- command[1] = access | 0x02;
- command[2] = reg;
- command[3] = 0;
- command[4] = 0;
- command[5] = 0;
- command[6] = LSB_of(len);
- command[7] = MSB_of(len);
-
- result = usb_stor_ctrl_transfer(us,
- us->send_ctrl_pipe,
- 0x80,
- 0x40,
- 0,
- 0,
- command,
- 8);
-
- if (result != USB_STOR_XFER_GOOD)
- return USB_STOR_TRANSPORT_ERROR;
-
- result = usb_stor_bulk_transfer_sg(us, us->recv_bulk_pipe,
- content, len, use_sg, NULL);
-
- return (result == USB_STOR_XFER_GOOD ?
- USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_ERROR);
+ return usbat_execute_command(us, command, 8);
}
/*
* Block, waiting for an ATA device to become not busy or to report
* an error condition.
*/
-
static int usbat_wait_not_busy(struct us_data *us, int minutes)
{
int i;
for (i=0; i<1200+minutes*60; i++) {
- result = usbat_read(us, USBAT_ATA, 0x17, status);
+ result = usbat_get_status(us, status);
if (result!=USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
- if (*status & 0x01) { // check condition
+ if (*status & 0x01) { /* check condition */
result = usbat_read(us, USBAT_ATA, 0x10, status);
return USB_STOR_TRANSPORT_FAILED;
}
- if (*status & 0x20) // device fault
+ if (*status & 0x20) /* device fault */
return USB_STOR_TRANSPORT_FAILED;
- if ((*status & 0x80)==0x00) { // not busy
+ if ((*status & 0x80)==0x00) { /* not busy */
US_DEBUGP("Waited not busy for %d steps\n", i);
return USB_STOR_TRANSPORT_GOOD;
}
if (i<500)
- msleep(10); // 5 seconds
+ msleep(10); /* 5 seconds */
else if (i<700)
- msleep(50); // 10 seconds
+ msleep(50); /* 10 seconds */
else if (i<1200)
- msleep(100); // 50 seconds
+ msleep(100); /* 50 seconds */
else
- msleep(1000); // X minutes
+ msleep(1000); /* X minutes */
}
US_DEBUGP("Waited not busy for %d minutes, timing out.\n",
return USB_STOR_TRANSPORT_FAILED;
}
+/*
+ * Read block data from the data register
+ */
+static int usbat_read_block(struct us_data *us,
+ unsigned char *content,
+ unsigned short len,
+ int use_sg)
+{
+ int result;
+ unsigned char *command = us->iobuf;
+
+ if (!len)
+ return USB_STOR_TRANSPORT_GOOD;
+
+ command[0] = 0xC0;
+ command[1] = USBAT_ATA | USBAT_CMD_READ_BLOCK;
+ command[2] = USBAT_ATA_DATA;
+ command[3] = 0;
+ command[4] = 0;
+ command[5] = 0;
+ command[6] = LSB_of(len);
+ command[7] = MSB_of(len);
+
+ result = usbat_execute_command(us, command, 8);
+ if (result != USB_STOR_XFER_GOOD)
+ return USB_STOR_TRANSPORT_ERROR;
+
+ result = usbat_bulk_read(us, content, len, use_sg);
+ return (result == USB_STOR_XFER_GOOD ?
+ USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_ERROR);
+}
+
+/*
+ * Write block data via the data register
+ */
static int usbat_write_block(struct us_data *us,
- unsigned char access,
- unsigned char reg,
+ unsigned char access,
unsigned char *content,
unsigned short len,
- int use_sg, int minutes)
+ int minutes,
+ int use_sg)
{
int result;
unsigned char *command = us->iobuf;
return USB_STOR_TRANSPORT_GOOD;
command[0] = 0x40;
- command[1] = access | 0x03;
- command[2] = reg;
+ command[1] = access | USBAT_CMD_WRITE_BLOCK;
+ command[2] = USBAT_ATA_DATA;
command[3] = 0;
command[4] = 0;
command[5] = 0;
command[6] = LSB_of(len);
command[7] = MSB_of(len);
- result = usb_stor_ctrl_transfer(us,
- us->send_ctrl_pipe,
- 0x80,
- 0x40,
- 0,
- 0,
- command,
- 8);
+ result = usbat_execute_command(us, command, 8);
if (result != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
- result = usb_stor_bulk_transfer_sg(us, us->send_bulk_pipe,
- content, len, use_sg, NULL);
-
+ result = usbat_bulk_write(us, content, len, use_sg);
if (result != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
return usbat_wait_not_busy(us, minutes);
}
-static int usbat_rw_block_test(struct us_data *us,
- unsigned char access,
- unsigned char *registers,
- unsigned char *data_out,
- unsigned short num_registers,
- unsigned char data_reg,
- unsigned char status_reg,
- unsigned char timeout,
- unsigned char qualifier,
- int direction,
- unsigned char *content,
- unsigned short len,
- int use_sg,
- int minutes)
+/*
+ * Process read and write requests
+ */
+static int usbat_hp8200e_rw_block_test(struct us_data *us,
+ unsigned char access,
+ unsigned char *registers,
+ unsigned char *data_out,
+ unsigned short num_registers,
+ unsigned char data_reg,
+ unsigned char status_reg,
+ unsigned char timeout,
+ unsigned char qualifier,
+ int direction,
+ unsigned char *content,
+ unsigned short len,
+ int use_sg,
+ int minutes)
{
int result;
unsigned int pipe = (direction == DMA_FROM_DEVICE) ?
us->recv_bulk_pipe : us->send_bulk_pipe;
- // Not really sure the 0x07, 0x17, 0xfc, 0xe7 is necessary here,
- // but that's what came out of the trace every single time.
-
unsigned char *command = us->iobuf;
int i, j;
int cmdlen;
if (i==0) {
cmdlen = 16;
+ /*
+ * Write to multiple registers
+ * Not really sure the 0x07, 0x17, 0xfc, 0xe7 is
+ * necessary here, but that's what came out of the
+ * trace every single time.
+ */
command[0] = 0x40;
- command[1] = access | 0x07;
+ command[1] = access | USBAT_CMD_WRITE_REGS;
command[2] = 0x07;
command[3] = 0x17;
command[4] = 0xFC;
} else
cmdlen = 8;
+ /* Conditionally read or write blocks */
command[cmdlen-8] = (direction==DMA_TO_DEVICE ? 0x40 : 0xC0);
command[cmdlen-7] = access |
- (direction==DMA_TO_DEVICE ? 0x05 : 0x04);
+ (direction==DMA_TO_DEVICE ?
+ USBAT_CMD_COND_WRITE_BLOCK : USBAT_CMD_COND_READ_BLOCK);
command[cmdlen-6] = data_reg;
command[cmdlen-5] = status_reg;
command[cmdlen-4] = timeout;
command[cmdlen-2] = LSB_of(len);
command[cmdlen-1] = MSB_of(len);
- result = usb_stor_ctrl_transfer(us,
- us->send_ctrl_pipe,
- 0x80,
- 0x40,
- 0,
- 0,
- command,
- cmdlen);
+ result = usbat_execute_command(us, command, cmdlen);
if (result != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
data[1+(j<<1)] = data_out[j];
}
- result = usb_stor_bulk_transfer_buf(us,
- us->send_bulk_pipe,
- data, num_registers*2, NULL);
-
+ result = usbat_bulk_write(us, data, num_registers*2, 0);
if (result != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
}
-
- //US_DEBUGP("Transfer %s %d bytes, sg buffers %d\n",
- // direction == DMA_TO_DEVICE ? "out" : "in",
- // len, use_sg);
-
result = usb_stor_bulk_transfer_sg(us,
pipe, content, len, use_sg, NULL);
*/
result = usbat_read(us, USBAT_ATA,
- direction==DMA_TO_DEVICE ? 0x17 : 0x0E,
+ direction==DMA_TO_DEVICE ?
+ USBAT_ATA_STATUS : USBAT_ATA_ALTSTATUS,
status);
if (result!=USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
- if (*status & 0x01) // check condition
+ if (*status & 0x01) /* check condition */
return USB_STOR_TRANSPORT_FAILED;
- if (*status & 0x20) // device fault
+ if (*status & 0x20) /* device fault */
return USB_STOR_TRANSPORT_FAILED;
US_DEBUGP("Redoing %s\n",
}
/*
- * Write data to multiple registers at once. Not meant for large
- * transfers of data!
+ * Write to multiple registers:
+ * Allows us to write specific data to any registers. The data to be written
+ * gets packed in this sequence: reg0, data0, reg1, data1, ..., regN, dataN
+ * which gets sent through bulk out.
+ * Not designed for large transfers of data!
*/
-
static int usbat_multiple_write(struct us_data *us,
- unsigned char access,
unsigned char *registers,
unsigned char *data_out,
unsigned short num_registers)
{
- int result;
+ int i, result;
unsigned char *data = us->iobuf;
- int i;
unsigned char *command = us->iobuf;
BUG_ON(num_registers > US_IOBUF_SIZE/2);
+ /* Write to multiple registers, ATA access */
command[0] = 0x40;
- command[1] = access | 0x07;
+ command[1] = USBAT_ATA | USBAT_CMD_WRITE_REGS;
+
+ /* No relevance */
command[2] = 0;
command[3] = 0;
command[4] = 0;
command[5] = 0;
+
+ /* Number of bytes to be transferred (incl. addresses and data) */
command[6] = LSB_of(num_registers*2);
command[7] = MSB_of(num_registers*2);
- result = usb_stor_ctrl_transfer(us,
- us->send_ctrl_pipe,
- 0x80,
- 0x40,
- 0,
- 0,
- command,
- 8);
-
+ /* The setup command */
+ result = usbat_execute_command(us, command, 8);
if (result != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
+ /* Create the reg/data, reg/data sequence */
for (i=0; i<num_registers; i++) {
data[i<<1] = registers[i];
data[1+(i<<1)] = data_out[i];
}
- result = usb_stor_bulk_transfer_buf(us,
- us->send_bulk_pipe, data, num_registers*2, NULL);
-
+ /* Send the data */
+ result = usbat_bulk_write(us, data, num_registers*2, 0);
if (result != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
- return usbat_wait_not_busy(us, 0);
+ if (usbat_get_device_type(us) == USBAT_DEV_HP8200)
+ return usbat_wait_not_busy(us, 0);
+ else
+ return USB_STOR_TRANSPORT_GOOD;
+}
+
+/*
+ * Conditionally read blocks from device:
+ * Allows us to read blocks from a specific data register, based upon the
+ * condition that a status register can be successfully masked with a status
+ * qualifier. If this condition is not initially met, the read will wait
+ * up until a maximum amount of time has elapsed, as specified by timeout.
+ * The read will start when the condition is met, otherwise the command aborts.
+ *
+ * The qualifier defined here is not the value that is masked, it defines
+ * conditions for the write to take place. The actual masked qualifier (and
+ * other related details) are defined beforehand with _set_shuttle_features().
+ */
+static int usbat_read_blocks(struct us_data *us,
+ unsigned char *buffer,
+ int len,
+ int use_sg)
+{
+ int result;
+ unsigned char *command = us->iobuf;
+
+ command[0] = 0xC0;
+ command[1] = USBAT_ATA | USBAT_CMD_COND_READ_BLOCK;
+ command[2] = USBAT_ATA_DATA;
+ command[3] = USBAT_ATA_STATUS;
+ command[4] = 0xFD; /* Timeout (ms); */
+ command[5] = USBAT_QUAL_FCQ;
+ command[6] = LSB_of(len);
+ command[7] = MSB_of(len);
+
+ /* Multiple block read setup command */
+ result = usbat_execute_command(us, command, 8);
+ if (result != USB_STOR_XFER_GOOD)
+ return USB_STOR_TRANSPORT_FAILED;
+
+ /* Read the blocks we just asked for */
+ result = usbat_bulk_read(us, buffer, len, use_sg);
+ if (result != USB_STOR_XFER_GOOD)
+ return USB_STOR_TRANSPORT_FAILED;
+
+ return USB_STOR_TRANSPORT_GOOD;
+}
+
+/*
+ * Conditionally write blocks to device:
+ * Allows us to write blocks to a specific data register, based upon the
+ * condition that a status register can be successfully masked with a status
+ * qualifier. If this condition is not initially met, the write will wait
+ * up until a maximum amount of time has elapsed, as specified by timeout.
+ * The read will start when the condition is met, otherwise the command aborts.
+ *
+ * The qualifier defined here is not the value that is masked, it defines
+ * conditions for the write to take place. The actual masked qualifier (and
+ * other related details) are defined beforehand with _set_shuttle_features().
+ */
+static int usbat_write_blocks(struct us_data *us,
+ unsigned char *buffer,
+ int len,
+ int use_sg)
+{
+ int result;
+ unsigned char *command = us->iobuf;
+
+ command[0] = 0x40;
+ command[1] = USBAT_ATA | USBAT_CMD_COND_WRITE_BLOCK;
+ command[2] = USBAT_ATA_DATA;
+ command[3] = USBAT_ATA_STATUS;
+ command[4] = 0xFD; /* Timeout (ms) */
+ command[5] = USBAT_QUAL_FCQ;
+ command[6] = LSB_of(len);
+ command[7] = MSB_of(len);
+
+ /* Multiple block write setup command */
+ result = usbat_execute_command(us, command, 8);
+ if (result != USB_STOR_XFER_GOOD)
+ return USB_STOR_TRANSPORT_FAILED;
+
+ /* Write the data */
+ result = usbat_bulk_write(us, buffer, len, use_sg);
+ if (result != USB_STOR_XFER_GOOD)
+ return USB_STOR_TRANSPORT_FAILED;
+
+ return USB_STOR_TRANSPORT_GOOD;
}
+/*
+ * Read the User IO register
+ */
static int usbat_read_user_io(struct us_data *us, unsigned char *data_flags)
{
int result;
result = usb_stor_ctrl_transfer(us,
us->recv_ctrl_pipe,
- 0x82,
+ USBAT_CMD_UIO,
0xC0,
0,
0,
data_flags,
- 1);
+ USBAT_UIO_READ);
+
+ US_DEBUGP("usbat_read_user_io: UIO register reads %02X\n", (unsigned short) (*data_flags));
return result;
}
+/*
+ * Write to the User IO register
+ */
static int usbat_write_user_io(struct us_data *us,
unsigned char enable_flags,
unsigned char data_flags)
{
- int result;
-
- result = usb_stor_ctrl_transfer(us,
+ return usb_stor_ctrl_transfer(us,
us->send_ctrl_pipe,
- 0x82,
+ USBAT_CMD_UIO,
0x40,
short_pack(enable_flags, data_flags),
0,
NULL,
- 0);
+ USBAT_UIO_WRITE);
+}
+
+/*
+ * Reset the device
+ * Often needed on media change.
+ */
+static int usbat_device_reset(struct us_data *us)
+{
+ int rc;
+
+ /*
+ * Reset peripheral, enable peripheral control signals
+ * (bring reset signal up)
+ */
+ rc = usbat_write_user_io(us,
+ USBAT_UIO_DRVRST | USBAT_UIO_OE1 | USBAT_UIO_OE0,
+ USBAT_UIO_EPAD | USBAT_UIO_1);
+ if (rc != USB_STOR_XFER_GOOD)
+ return USB_STOR_TRANSPORT_ERROR;
+
+ /*
+ * Enable peripheral control signals
+ * (bring reset signal down)
+ */
+ rc = usbat_write_user_io(us,
+ USBAT_UIO_OE1 | USBAT_UIO_OE0,
+ USBAT_UIO_EPAD | USBAT_UIO_1);
+ if (rc != USB_STOR_XFER_GOOD)
+ return USB_STOR_TRANSPORT_ERROR;
+
+ return USB_STOR_TRANSPORT_GOOD;
+}
+
+/*
+ * Enable card detect
+ */
+static int usbat_device_enable_cdt(struct us_data *us)
+{
+ int rc;
+
+ /* Enable peripheral control signals and card detect */
+ rc = usbat_write_user_io(us,
+ USBAT_UIO_ACKD | USBAT_UIO_OE1 | USBAT_UIO_OE0,
+ USBAT_UIO_EPAD | USBAT_UIO_1);
+ if (rc != USB_STOR_XFER_GOOD)
+ return USB_STOR_TRANSPORT_ERROR;
+
+ return USB_STOR_TRANSPORT_GOOD;
+}
+
+/*
+ * Determine if media is present.
+ */
+static int usbat_flash_check_media_present(unsigned char *uio)
+{
+ if (*uio & USBAT_UIO_UI0) {
+ US_DEBUGP("usbat_flash_check_media_present: no media detected\n");
+ return USBAT_FLASH_MEDIA_NONE;
+ }
+
+ return USBAT_FLASH_MEDIA_CF;
+}
+
+/*
+ * Determine if media has changed since last operation
+ */
+static int usbat_flash_check_media_changed(unsigned char *uio)
+{
+ if (*uio & USBAT_UIO_0) {
+ US_DEBUGP("usbat_flash_check_media_changed: media change detected\n");
+ return USBAT_FLASH_MEDIA_CHANGED;
+ }
+
+ return USBAT_FLASH_MEDIA_SAME;
+}
+
+/*
+ * Check for media change / no media and handle the situation appropriately
+ */
+static int usbat_flash_check_media(struct us_data *us,
+ struct usbat_info *info)
+{
+ int rc;
+ unsigned char *uio = us->iobuf;
+
+ rc = usbat_read_user_io(us, uio);
+ if (rc != USB_STOR_XFER_GOOD)
+ return USB_STOR_TRANSPORT_ERROR;
+
+ /* Check for media existence */
+ rc = usbat_flash_check_media_present(uio);
+ if (rc == USBAT_FLASH_MEDIA_NONE) {
+ info->sense_key = 0x02;
+ info->sense_asc = 0x3A;
+ info->sense_ascq = 0x00;
+ return USB_STOR_TRANSPORT_FAILED;
+ }
+
+ /* Check for media change */
+ rc = usbat_flash_check_media_changed(uio);
+ if (rc == USBAT_FLASH_MEDIA_CHANGED) {
+
+ /* Reset and re-enable card detect */
+ rc = usbat_device_reset(us);
+ if (rc != USB_STOR_TRANSPORT_GOOD)
+ return rc;
+ rc = usbat_device_enable_cdt(us);
+ if (rc != USB_STOR_TRANSPORT_GOOD)
+ return rc;
+
+ msleep(50);
+
+ rc = usbat_read_user_io(us, uio);
+ if (rc != USB_STOR_XFER_GOOD)
+ return USB_STOR_TRANSPORT_ERROR;
+
+ info->sense_key = UNIT_ATTENTION;
+ info->sense_asc = 0x28;
+ info->sense_ascq = 0x00;
+ return USB_STOR_TRANSPORT_FAILED;
+ }
+
+ return USB_STOR_TRANSPORT_GOOD;
+}
+
+/*
+ * Determine whether we are controlling a flash-based reader/writer,
+ * or a HP8200-based CD drive.
+ * Sets transport functions as appropriate.
+ */
+static int usbat_identify_device(struct us_data *us,
+ struct usbat_info *info)
+{
+ int rc;
+ unsigned char status;
+
+ if (!us || !info)
+ return USB_STOR_TRANSPORT_ERROR;
+
+ rc = usbat_device_reset(us);
+ if (rc != USB_STOR_TRANSPORT_GOOD)
+ return rc;
+ msleep(500);
+
+ /*
+ * In attempt to distinguish between HP CDRW's and Flash readers, we now
+ * execute the IDENTIFY PACKET DEVICE command. On ATA devices (i.e. flash
+ * readers), this command should fail with error. On ATAPI devices (i.e.
+ * CDROM drives), it should succeed.
+ */
+ rc = usbat_write(us, USBAT_ATA, USBAT_ATA_CMD, 0xA1);
+ if (rc != USB_STOR_XFER_GOOD)
+ return USB_STOR_TRANSPORT_ERROR;
+
+ rc = usbat_get_status(us, &status);
+ if (rc != USB_STOR_XFER_GOOD)
+ return USB_STOR_TRANSPORT_ERROR;
+
+ /* Check for error bit, or if the command 'fell through' */
+ if (status == 0xA1 || !(status & 0x01)) {
+ /* Device is HP 8200 */
+ US_DEBUGP("usbat_identify_device: Detected HP8200 CDRW\n");
+ info->devicetype = USBAT_DEV_HP8200;
+ } else {
+ /* Device is a CompactFlash reader/writer */
+ US_DEBUGP("usbat_identify_device: Detected Flash reader/writer\n");
+ info->devicetype = USBAT_DEV_FLASH;
+ }
+
+ return USB_STOR_TRANSPORT_GOOD;
+}
+
+/*
+ * Set the transport function based on the device type
+ */
+static int usbat_set_transport(struct us_data *us,
+ struct usbat_info *info,
+ int devicetype)
+{
+
+ if (!info->devicetype)
+ info->devicetype = devicetype;
+
+ if (!info->devicetype)
+ usbat_identify_device(us, info);
+
+ switch (info->devicetype) {
+ default:
+ return USB_STOR_TRANSPORT_ERROR;
+
+ case USBAT_DEV_HP8200:
+ us->transport = usbat_hp8200e_transport;
+ break;
+
+ case USBAT_DEV_FLASH:
+ us->transport = usbat_flash_transport;
+ break;
+ }
+
+ return 0;
+}
+
+/*
+ * Read the media capacity
+ */
+static int usbat_flash_get_sector_count(struct us_data *us,
+ struct usbat_info *info)
+{
+ unsigned char registers[3] = {
+ USBAT_ATA_SECCNT,
+ USBAT_ATA_DEVICE,
+ USBAT_ATA_CMD,
+ };
+ unsigned char command[3] = { 0x01, 0xA0, 0xEC };
+ unsigned char *reply;
+ unsigned char status;
+ int rc;
+
+ if (!us || !info)
+ return USB_STOR_TRANSPORT_ERROR;
+
+ reply = kmalloc(512, GFP_NOIO);
+ if (!reply)
+ return USB_STOR_TRANSPORT_ERROR;
+
+ /* ATA command : IDENTIFY DEVICE */
+ rc = usbat_multiple_write(us, registers, command, 3);
+ if (rc != USB_STOR_XFER_GOOD) {
+ US_DEBUGP("usbat_flash_get_sector_count: Gah! identify_device failed\n");
+ rc = USB_STOR_TRANSPORT_ERROR;
+ goto leave;
+ }
+
+ /* Read device status */
+ if (usbat_get_status(us, &status) != USB_STOR_XFER_GOOD) {
+ rc = USB_STOR_TRANSPORT_ERROR;
+ goto leave;
+ }
+
+ msleep(100);
+
+ /* Read the device identification data */
+ rc = usbat_read_block(us, reply, 512, 0);
+ if (rc != USB_STOR_TRANSPORT_GOOD)
+ goto leave;
+
+ info->sectors = ((u32)(reply[117]) << 24) |
+ ((u32)(reply[116]) << 16) |
+ ((u32)(reply[115]) << 8) |
+ ((u32)(reply[114]) );
+
+ rc = USB_STOR_TRANSPORT_GOOD;
+
+ leave:
+ kfree(reply);
+ return rc;
+}
+
+/*
+ * Read data from device
+ */
+static int usbat_flash_read_data(struct us_data *us,
+ struct usbat_info *info,
+ u32 sector,
+ u32 sectors)
+{
+ unsigned char registers[7] = {
+ USBAT_ATA_FEATURES,
+ USBAT_ATA_SECCNT,
+ USBAT_ATA_SECNUM,
+ USBAT_ATA_LBA_ME,
+ USBAT_ATA_LBA_HI,
+ USBAT_ATA_DEVICE,
+ USBAT_ATA_STATUS,
+ };
+ unsigned char command[7];
+ unsigned char *buffer;
+ unsigned char thistime;
+ unsigned int totallen, alloclen;
+ int len, result;
+ unsigned int sg_idx = 0, sg_offset = 0;
+
+ result = usbat_flash_check_media(us, info);
+ if (result != USB_STOR_TRANSPORT_GOOD)
+ return result;
+
+ /*
+ * we're working in LBA mode. according to the ATA spec,
+ * we can support up to 28-bit addressing. I don't know if Jumpshot
+ * supports beyond 24-bit addressing. It's kind of hard to test
+ * since it requires > 8GB CF card.
+ */
+
+ if (sector > 0x0FFFFFFF)
+ return USB_STOR_TRANSPORT_ERROR;
+
+ totallen = sectors * info->ssize;
+
+ /*
+ * Since we don't read more than 64 KB at a time, we have to create
+ * a bounce buffer and move the data a piece at a time between the
+ * bounce buffer and the actual transfer buffer.
+ */
+
+ alloclen = min(totallen, 65536u);
+ buffer = kmalloc(alloclen, GFP_NOIO);
+ if (buffer == NULL)
+ return USB_STOR_TRANSPORT_ERROR;
+
+ do {
+ /*
+ * loop, never allocate or transfer more than 64k at once
+ * (min(128k, 255*info->ssize) is the real limit)
+ */
+ len = min(totallen, alloclen);
+ thistime = (len / info->ssize) & 0xff;
+
+ /* ATA command 0x20 (READ SECTORS) */
+ usbat_pack_ata_sector_cmd(command, thistime, sector, 0x20);
+
+ /* Write/execute ATA read command */
+ result = usbat_multiple_write(us, registers, command, 7);
+ if (result != USB_STOR_TRANSPORT_GOOD)
+ goto leave;
+
+ /* Read the data we just requested */
+ result = usbat_read_blocks(us, buffer, len, 0);
+ if (result != USB_STOR_TRANSPORT_GOOD)
+ goto leave;
+
+ US_DEBUGP("usbat_flash_read_data: %d bytes\n", len);
+
+ /* Store the data in the transfer buffer */
+ usb_stor_access_xfer_buf(buffer, len, us->srb,
+ &sg_idx, &sg_offset, TO_XFER_BUF);
+
+ sector += thistime;
+ totallen -= len;
+ } while (totallen > 0);
+
+ kfree(buffer);
+ return USB_STOR_TRANSPORT_GOOD;
+
+leave:
+ kfree(buffer);
+ return USB_STOR_TRANSPORT_ERROR;
+}
+
+/*
+ * Write data to device
+ */
+static int usbat_flash_write_data(struct us_data *us,
+ struct usbat_info *info,
+ u32 sector,
+ u32 sectors)
+{
+ unsigned char registers[7] = {
+ USBAT_ATA_FEATURES,
+ USBAT_ATA_SECCNT,
+ USBAT_ATA_SECNUM,
+ USBAT_ATA_LBA_ME,
+ USBAT_ATA_LBA_HI,
+ USBAT_ATA_DEVICE,
+ USBAT_ATA_STATUS,
+ };
+ unsigned char command[7];
+ unsigned char *buffer;
+ unsigned char thistime;
+ unsigned int totallen, alloclen;
+ int len, result;
+ unsigned int sg_idx = 0, sg_offset = 0;
+
+ result = usbat_flash_check_media(us, info);
+ if (result != USB_STOR_TRANSPORT_GOOD)
+ return result;
+
+ /*
+ * we're working in LBA mode. according to the ATA spec,
+ * we can support up to 28-bit addressing. I don't know if the device
+ * supports beyond 24-bit addressing. It's kind of hard to test
+ * since it requires > 8GB media.
+ */
+
+ if (sector > 0x0FFFFFFF)
+ return USB_STOR_TRANSPORT_ERROR;
+
+ totallen = sectors * info->ssize;
+
+ /*
+ * Since we don't write more than 64 KB at a time, we have to create
+ * a bounce buffer and move the data a piece at a time between the
+ * bounce buffer and the actual transfer buffer.
+ */
+
+ alloclen = min(totallen, 65536u);
+ buffer = kmalloc(alloclen, GFP_NOIO);
+ if (buffer == NULL)
+ return USB_STOR_TRANSPORT_ERROR;
+
+ do {
+ /*
+ * loop, never allocate or transfer more than 64k at once
+ * (min(128k, 255*info->ssize) is the real limit)
+ */
+ len = min(totallen, alloclen);
+ thistime = (len / info->ssize) & 0xff;
+
+ /* Get the data from the transfer buffer */
+ usb_stor_access_xfer_buf(buffer, len, us->srb,
+ &sg_idx, &sg_offset, FROM_XFER_BUF);
+
+ /* ATA command 0x30 (WRITE SECTORS) */
+ usbat_pack_ata_sector_cmd(command, thistime, sector, 0x30);
+
+ /* Write/execute ATA write command */
+ result = usbat_multiple_write(us, registers, command, 7);
+ if (result != USB_STOR_TRANSPORT_GOOD)
+ goto leave;
+
+ /* Write the data */
+ result = usbat_write_blocks(us, buffer, len, 0);
+ if (result != USB_STOR_TRANSPORT_GOOD)
+ goto leave;
+
+ sector += thistime;
+ totallen -= len;
+ } while (totallen > 0);
+ kfree(buffer);
return result;
+
+leave:
+ kfree(buffer);
+ return USB_STOR_TRANSPORT_ERROR;
}
/*
* Squeeze a potentially huge (> 65535 byte) read10 command into
* a little ( <= 65535 byte) ATAPI pipe
*/
-
-static int usbat_handle_read10(struct us_data *us,
- unsigned char *registers,
- unsigned char *data,
- struct scsi_cmnd *srb)
+static int usbat_hp8200e_handle_read10(struct us_data *us,
+ unsigned char *registers,
+ unsigned char *data,
+ struct scsi_cmnd *srb)
{
int result = USB_STOR_TRANSPORT_GOOD;
unsigned char *buffer;
if (srb->request_bufflen < 0x10000) {
- result = usbat_rw_block_test(us, USBAT_ATA,
+ result = usbat_hp8200e_rw_block_test(us, USBAT_ATA,
registers, data, 19,
- 0x10, 0x17, 0xFD, 0x30,
+ USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD,
+ (USBAT_QUAL_FCQ | USBAT_QUAL_ALQ),
DMA_FROM_DEVICE,
srb->request_buffer,
srb->request_bufflen, srb->use_sg, 1);
srb->transfersize);
}
- // Since we only read in one block at a time, we have to create
- // a bounce buffer and move the data a piece at a time between the
- // bounce buffer and the actual transfer buffer.
+ /*
+ * Since we only read in one block at a time, we have to create
+ * a bounce buffer and move the data a piece at a time between the
+ * bounce buffer and the actual transfer buffer.
+ */
len = (65535/srb->transfersize) * srb->transfersize;
US_DEBUGP("Max read is %d bytes\n", len);
len = min(len, srb->request_bufflen);
buffer = kmalloc(len, GFP_NOIO);
- if (buffer == NULL) // bloody hell!
+ if (buffer == NULL) /* bloody hell! */
return USB_STOR_TRANSPORT_FAILED;
sector = short_pack(data[7+3], data[7+2]);
sector <<= 16;
sector |= short_pack(data[7+5], data[7+4]);
transferred = 0;
- sg_segment = 0; // for keeping track of where we are in
- sg_offset = 0; // the scatter/gather list
+ sg_segment = 0; /* for keeping track of where we are in */
+ sg_offset = 0; /* the scatter/gather list */
while (transferred != srb->request_bufflen) {
if (len > srb->request_bufflen - transferred)
len = srb->request_bufflen - transferred;
- data[3] = len&0xFF; // (cylL) = expected length (L)
- data[4] = (len>>8)&0xFF; // (cylH) = expected length (H)
+ data[3] = len&0xFF; /* (cylL) = expected length (L) */
+ data[4] = (len>>8)&0xFF; /* (cylH) = expected length (H) */
- // Fix up the SCSI command sector and num sectors
+ /* Fix up the SCSI command sector and num sectors */
- data[7+2] = MSB_of(sector>>16); // SCSI command sector
+ data[7+2] = MSB_of(sector>>16); /* SCSI command sector */
data[7+3] = LSB_of(sector>>16);
data[7+4] = MSB_of(sector&0xFFFF);
data[7+5] = LSB_of(sector&0xFFFF);
if (data[7+0] == GPCMD_READ_CD)
data[7+6] = 0;
- data[7+7] = MSB_of(len / srb->transfersize); // SCSI command
- data[7+8] = LSB_of(len / srb->transfersize); // num sectors
+ data[7+7] = MSB_of(len / srb->transfersize); /* SCSI command */
+ data[7+8] = LSB_of(len / srb->transfersize); /* num sectors */
- result = usbat_rw_block_test(us, USBAT_ATA,
+ result = usbat_hp8200e_rw_block_test(us, USBAT_ATA,
registers, data, 19,
- 0x10, 0x17, 0xFD, 0x30,
+ USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD,
+ (USBAT_QUAL_FCQ | USBAT_QUAL_ALQ),
DMA_FROM_DEVICE,
buffer,
len, 0, 1);
if (result != USB_STOR_TRANSPORT_GOOD)
break;
- // Store the data in the transfer buffer
+ /* Store the data in the transfer buffer */
usb_stor_access_xfer_buf(buffer, len, srb,
&sg_segment, &sg_offset, TO_XFER_BUF);
- // Update the amount transferred and the sector number
+ /* Update the amount transferred and the sector number */
transferred += len;
sector += len / srb->transfersize;
- } // while transferred != srb->request_bufflen
+ } /* while transferred != srb->request_bufflen */
kfree(buffer);
return result;
}
-static int hp_8200e_select_and_test_registers(struct us_data *us)
+static int usbat_select_and_test_registers(struct us_data *us)
{
int selector;
unsigned char *status = us->iobuf;
- // try device = master, then device = slave.
-
+ /* try device = master, then device = slave. */
for (selector = 0xA0; selector <= 0xB0; selector += 0x10) {
-
- if (usbat_write(us, USBAT_ATA, 0x16, selector) !=
+ if (usbat_write(us, USBAT_ATA, USBAT_ATA_DEVICE, selector) !=
USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
- if (usbat_read(us, USBAT_ATA, 0x17, status) !=
+ if (usbat_read(us, USBAT_ATA, USBAT_ATA_STATUS, status) !=
USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
- if (usbat_read(us, USBAT_ATA, 0x16, status) !=
+ if (usbat_read(us, USBAT_ATA, USBAT_ATA_DEVICE, status) !=
USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
- if (usbat_read(us, USBAT_ATA, 0x14, status) !=
+ if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) !=
USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
- if (usbat_read(us, USBAT_ATA, 0x15, status) !=
+ if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_HI, status) !=
USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
- if (usbat_write(us, USBAT_ATA, 0x14, 0x55) !=
+ if (usbat_write(us, USBAT_ATA, USBAT_ATA_LBA_ME, 0x55) !=
USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
- if (usbat_write(us, USBAT_ATA, 0x15, 0xAA) !=
+ if (usbat_write(us, USBAT_ATA, USBAT_ATA_LBA_HI, 0xAA) !=
USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
- if (usbat_read(us, USBAT_ATA, 0x14, status) !=
+ if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) !=
USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
- if (usbat_read(us, USBAT_ATA, 0x15, status) !=
+ if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) !=
USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
}
return USB_STOR_TRANSPORT_GOOD;
}
-int init_8200e(struct us_data *us)
+/*
+ * Initialize the USBAT processor and the storage device
+ */
+static int init_usbat(struct us_data *us, int devicetype)
{
- int result;
+ int rc;
+ struct usbat_info *info;
+ unsigned char subcountH = USBAT_ATA_LBA_HI;
+ unsigned char subcountL = USBAT_ATA_LBA_ME;
unsigned char *status = us->iobuf;
- // Enable peripheral control signals
+ us->extra = kzalloc(sizeof(struct usbat_info), GFP_NOIO);
+ if (!us->extra) {
+ US_DEBUGP("init_usbat: Gah! Can't allocate storage for usbat info struct!\n");
+ return 1;
+ }
+ info = (struct usbat_info *) (us->extra);
- if (usbat_write_user_io(us,
- USBAT_UIO_OE1 | USBAT_UIO_OE0,
- USBAT_UIO_EPAD | USBAT_UIO_1) != USB_STOR_XFER_GOOD)
+ /* Enable peripheral control signals */
+ rc = usbat_write_user_io(us,
+ USBAT_UIO_OE1 | USBAT_UIO_OE0,
+ USBAT_UIO_EPAD | USBAT_UIO_1);
+ if (rc != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
US_DEBUGP("INIT 1\n");
msleep(2000);
- if (usbat_read_user_io(us, status) !=
- USB_STOR_XFER_GOOD)
- return USB_STOR_TRANSPORT_ERROR;
+ rc = usbat_read_user_io(us, status);
+ if (rc != USB_STOR_TRANSPORT_GOOD)
+ return rc;
US_DEBUGP("INIT 2\n");
- if (usbat_read_user_io(us, status) !=
- USB_STOR_XFER_GOOD)
+ rc = usbat_read_user_io(us, status);
+ if (rc != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
- US_DEBUGP("INIT 3\n");
+ rc = usbat_read_user_io(us, status);
+ if (rc != USB_STOR_XFER_GOOD)
+ return USB_STOR_TRANSPORT_ERROR;
- // Reset peripheral, enable periph control signals
- // (bring reset signal up)
+ US_DEBUGP("INIT 3\n");
- if (usbat_write_user_io(us,
- USBAT_UIO_DRVRST | USBAT_UIO_OE1 | USBAT_UIO_OE0,
- USBAT_UIO_EPAD | USBAT_UIO_1) != USB_STOR_XFER_GOOD)
- return USB_STOR_TRANSPORT_ERROR;
+ rc = usbat_select_and_test_registers(us);
+ if (rc != USB_STOR_TRANSPORT_GOOD)
+ return rc;
US_DEBUGP("INIT 4\n");
- // Enable periph control signals
- // (bring reset signal down)
-
- if (usbat_write_user_io(us,
- USBAT_UIO_OE1 | USBAT_UIO_OE0,
- USBAT_UIO_EPAD | USBAT_UIO_1) != USB_STOR_XFER_GOOD)
+ rc = usbat_read_user_io(us, status);
+ if (rc != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
US_DEBUGP("INIT 5\n");
- msleep(250);
-
- // Write 0x80 to ISA port 0x3F
-
- if (usbat_write(us, USBAT_ISA, 0x3F, 0x80) !=
- USB_STOR_XFER_GOOD)
- return USB_STOR_TRANSPORT_ERROR;
+ /* Enable peripheral control signals and card detect */
+ rc = usbat_device_enable_cdt(us);
+ if (rc != USB_STOR_TRANSPORT_GOOD)
+ return rc;
US_DEBUGP("INIT 6\n");
- // Read ISA port 0x27
-
- if (usbat_read(us, USBAT_ISA, 0x27, status) !=
- USB_STOR_XFER_GOOD)
+ rc = usbat_read_user_io(us, status);
+ if (rc != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
US_DEBUGP("INIT 7\n");
- if (usbat_read_user_io(us, status) !=
- USB_STOR_XFER_GOOD)
+ msleep(1400);
+
+ rc = usbat_read_user_io(us, status);
+ if (rc != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
US_DEBUGP("INIT 8\n");
- if ( (result = hp_8200e_select_and_test_registers(us)) !=
- USB_STOR_TRANSPORT_GOOD)
- return result;
+ rc = usbat_select_and_test_registers(us);
+ if (rc != USB_STOR_TRANSPORT_GOOD)
+ return rc;
US_DEBUGP("INIT 9\n");
- if (usbat_read_user_io(us, status) !=
- USB_STOR_XFER_GOOD)
+ /* At this point, we need to detect which device we are using */
+ if (usbat_set_transport(us, info, devicetype))
return USB_STOR_TRANSPORT_ERROR;
US_DEBUGP("INIT 10\n");
- // Enable periph control signals and card detect
-
- if (usbat_write_user_io(us,
- USBAT_UIO_ACKD |USBAT_UIO_OE1 | USBAT_UIO_OE0,
- USBAT_UIO_EPAD | USBAT_UIO_1) != USB_STOR_XFER_GOOD)
+ if (usbat_get_device_type(us) == USBAT_DEV_FLASH) {
+ subcountH = 0x02;
+ subcountL = 0x00;
+ }
+ rc = usbat_set_shuttle_features(us, (USBAT_FEAT_ETEN | USBAT_FEAT_ET2 | USBAT_FEAT_ET1),
+ 0x00, 0x88, 0x08, subcountH, subcountL);
+ if (rc != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
US_DEBUGP("INIT 11\n");
- if (usbat_read_user_io(us, status) !=
- USB_STOR_XFER_GOOD)
- return USB_STOR_TRANSPORT_ERROR;
-
- US_DEBUGP("INIT 12\n");
-
- msleep(1400);
-
- if (usbat_read_user_io(us, status) !=
- USB_STOR_XFER_GOOD)
- return USB_STOR_TRANSPORT_ERROR;
-
- US_DEBUGP("INIT 13\n");
-
- if ( (result = hp_8200e_select_and_test_registers(us)) !=
- USB_STOR_TRANSPORT_GOOD)
- return result;
-
- US_DEBUGP("INIT 14\n");
-
- if (usbat_set_shuttle_features(us,
- 0x83, 0x00, 0x88, 0x08, 0x15, 0x14) !=
- USB_STOR_XFER_GOOD)
- return USB_STOR_TRANSPORT_ERROR;
-
- US_DEBUGP("INIT 15\n");
-
return USB_STOR_TRANSPORT_GOOD;
}
/*
* Transport for the HP 8200e
*/
-int hp8200e_transport(struct scsi_cmnd *srb, struct us_data *us)
+static int usbat_hp8200e_transport(struct scsi_cmnd *srb, struct us_data *us)
{
int result;
unsigned char *status = us->iobuf;
commands... just ATA Packet Commands.
*/
- registers[0] = 0x11;
- registers[1] = 0x12;
- registers[2] = 0x13;
- registers[3] = 0x14;
- registers[4] = 0x15;
- registers[5] = 0x16;
- registers[6] = 0x17;
+ registers[0] = USBAT_ATA_FEATURES;
+ registers[1] = USBAT_ATA_SECCNT;
+ registers[2] = USBAT_ATA_SECNUM;
+ registers[3] = USBAT_ATA_LBA_ME;
+ registers[4] = USBAT_ATA_LBA_HI;
+ registers[5] = USBAT_ATA_DEVICE;
+ registers[6] = USBAT_ATA_CMD;
data[0] = 0x00;
data[1] = 0x00;
data[2] = 0x00;
- data[3] = len&0xFF; // (cylL) = expected length (L)
- data[4] = (len>>8)&0xFF; // (cylH) = expected length (H)
- data[5] = 0xB0; // (device sel) = slave
- data[6] = 0xA0; // (command) = ATA PACKET COMMAND
+ data[3] = len&0xFF; /* (cylL) = expected length (L) */
+ data[4] = (len>>8)&0xFF; /* (cylH) = expected length (H) */
+ data[5] = 0xB0; /* (device sel) = slave */
+ data[6] = 0xA0; /* (command) = ATA PACKET COMMAND */
for (i=7; i<19; i++) {
registers[i] = 0x10;
data[i] = (i-7 >= srb->cmd_len) ? 0 : srb->cmnd[i-7];
}
- result = usbat_read(us, USBAT_ATA, 0x17, status);
+ result = usbat_get_status(us, status);
US_DEBUGP("Status = %02X\n", *status);
if (result != USB_STOR_XFER_GOOD)
return USB_STOR_TRANSPORT_ERROR;
if (srb->sc_data_direction == DMA_TO_DEVICE) {
- result = usbat_rw_block_test(us, USBAT_ATA,
+ result = usbat_hp8200e_rw_block_test(us, USBAT_ATA,
registers, data, 19,
- 0x10, 0x17, 0xFD, 0x30,
+ USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD,
+ (USBAT_QUAL_FCQ | USBAT_QUAL_ALQ),
DMA_TO_DEVICE,
srb->request_buffer,
len, srb->use_sg, 10);
} else if (srb->cmnd[0] == READ_10 ||
srb->cmnd[0] == GPCMD_READ_CD) {
- return usbat_handle_read10(us, registers, data, srb);
+ return usbat_hp8200e_handle_read10(us, registers, data, srb);
}
}
if ( (result = usbat_multiple_write(us,
- USBAT_ATA,
registers, data, 7)) != USB_STOR_TRANSPORT_GOOD) {
return result;
}
- // Write the 12-byte command header.
-
- // If the command is BLANK then set the timer for 75 minutes.
- // Otherwise set it for 10 minutes.
-
- // NOTE: THE 8200 DOCUMENTATION STATES THAT BLANKING A CDRW
- // AT SPEED 4 IS UNRELIABLE!!!
+ /*
+ * Write the 12-byte command header.
+ *
+ * If the command is BLANK then set the timer for 75 minutes.
+ * Otherwise set it for 10 minutes.
+ *
+ * NOTE: THE 8200 DOCUMENTATION STATES THAT BLANKING A CDRW
+ * AT SPEED 4 IS UNRELIABLE!!!
+ */
- if ( (result = usbat_write_block(us,
- USBAT_ATA, 0x10, srb->cmnd, 12, 0,
- srb->cmnd[0]==GPCMD_BLANK ? 75 : 10)) !=
- USB_STOR_TRANSPORT_GOOD) {
+ if ((result = usbat_write_block(us,
+ USBAT_ATA, srb->cmnd, 12,
+ (srb->cmnd[0]==GPCMD_BLANK ? 75 : 10), 0) !=
+ USB_STOR_TRANSPORT_GOOD)) {
return result;
}
- // If there is response data to be read in
- // then do it here.
+ /* If there is response data to be read in then do it here. */
if (len != 0 && (srb->sc_data_direction == DMA_FROM_DEVICE)) {
- // How many bytes to read in? Check cylL register
+ /* How many bytes to read in? Check cylL register */
- if (usbat_read(us, USBAT_ATA, 0x14, status) !=
+ if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) !=
USB_STOR_XFER_GOOD) {
return USB_STOR_TRANSPORT_ERROR;
}
- if (len > 0xFF) { // need to read cylH also
+ if (len > 0xFF) { /* need to read cylH also */
len = *status;
- if (usbat_read(us, USBAT_ATA, 0x15, status) !=
+ if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_HI, status) !=
USB_STOR_XFER_GOOD) {
return USB_STOR_TRANSPORT_ERROR;
}
len = *status;
- result = usbat_read_block(us, USBAT_ATA, 0x10,
- srb->request_buffer, len, srb->use_sg);
+ result = usbat_read_block(us, srb->request_buffer, len, srb->use_sg);
/* Debug-print the first 32 bytes of the transfer */
return result;
}
+/*
+ * Transport for USBAT02-based CompactFlash and similar storage devices
+ */
+static int usbat_flash_transport(struct scsi_cmnd * srb, struct us_data *us)
+{
+ int rc;
+ struct usbat_info *info = (struct usbat_info *) (us->extra);
+ unsigned long block, blocks;
+ unsigned char *ptr = us->iobuf;
+ static unsigned char inquiry_response[36] = {
+ 0x00, 0x80, 0x00, 0x01, 0x1F, 0x00, 0x00, 0x00
+ };
+
+ if (srb->cmnd[0] == INQUIRY) {
+ US_DEBUGP("usbat_flash_transport: INQUIRY. Returning bogus response.\n");
+ memcpy(ptr, inquiry_response, sizeof(inquiry_response));
+ fill_inquiry_response(us, ptr, 36);
+ return USB_STOR_TRANSPORT_GOOD;
+ }
+
+ if (srb->cmnd[0] == READ_CAPACITY) {
+ rc = usbat_flash_check_media(us, info);
+ if (rc != USB_STOR_TRANSPORT_GOOD)
+ return rc;
+
+ rc = usbat_flash_get_sector_count(us, info);
+ if (rc != USB_STOR_TRANSPORT_GOOD)
+ return rc;
+
+ /* hard coded 512 byte sectors as per ATA spec */
+ info->ssize = 0x200;
+ US_DEBUGP("usbat_flash_transport: READ_CAPACITY: %ld sectors, %ld bytes per sector\n",
+ info->sectors, info->ssize);
+
+ /*
+ * build the reply
+ * note: must return the sector number of the last sector,
+ * *not* the total number of sectors
+ */
+ ((__be32 *) ptr)[0] = cpu_to_be32(info->sectors - 1);
+ ((__be32 *) ptr)[1] = cpu_to_be32(info->ssize);
+ usb_stor_set_xfer_buf(ptr, 8, srb);
+
+ return USB_STOR_TRANSPORT_GOOD;
+ }
+
+ if (srb->cmnd[0] == MODE_SELECT_10) {
+ US_DEBUGP("usbat_flash_transport: Gah! MODE_SELECT_10.\n");
+ return USB_STOR_TRANSPORT_ERROR;
+ }
+
+ if (srb->cmnd[0] == READ_10) {
+ block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
+ ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5]));
+
+ blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8]));
+
+ US_DEBUGP("usbat_flash_transport: READ_10: read block 0x%04lx count %ld\n", block, blocks);
+ return usbat_flash_read_data(us, info, block, blocks);
+ }
+
+ if (srb->cmnd[0] == READ_12) {
+ /*
+ * I don't think we'll ever see a READ_12 but support it anyway
+ */
+ block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
+ ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5]));
+
+ blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) |
+ ((u32)(srb->cmnd[8]) << 8) | ((u32)(srb->cmnd[9]));
+
+ US_DEBUGP("usbat_flash_transport: READ_12: read block 0x%04lx count %ld\n", block, blocks);
+ return usbat_flash_read_data(us, info, block, blocks);
+ }
+
+ if (srb->cmnd[0] == WRITE_10) {
+ block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
+ ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5]));
+
+ blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8]));
+
+ US_DEBUGP("usbat_flash_transport: WRITE_10: write block 0x%04lx count %ld\n", block, blocks);
+ return usbat_flash_write_data(us, info, block, blocks);
+ }
+
+ if (srb->cmnd[0] == WRITE_12) {
+ /*
+ * I don't think we'll ever see a WRITE_12 but support it anyway
+ */
+ block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
+ ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5]));
+
+ blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) |
+ ((u32)(srb->cmnd[8]) << 8) | ((u32)(srb->cmnd[9]));
+
+ US_DEBUGP("usbat_flash_transport: WRITE_12: write block 0x%04lx count %ld\n", block, blocks);
+ return usbat_flash_write_data(us, info, block, blocks);
+ }
+
+
+ if (srb->cmnd[0] == TEST_UNIT_READY) {
+ US_DEBUGP("usbat_flash_transport: TEST_UNIT_READY.\n");
+
+ rc = usbat_flash_check_media(us, info);
+ if (rc != USB_STOR_TRANSPORT_GOOD)
+ return rc;
+
+ return usbat_check_status(us);
+ }
+
+ if (srb->cmnd[0] == REQUEST_SENSE) {
+ US_DEBUGP("usbat_flash_transport: REQUEST_SENSE.\n");
+
+ memset(ptr, 0, 18);
+ ptr[0] = 0xF0;
+ ptr[2] = info->sense_key;
+ ptr[7] = 11;
+ ptr[12] = info->sense_asc;
+ ptr[13] = info->sense_ascq;
+ usb_stor_set_xfer_buf(ptr, 18, srb);
+
+ return USB_STOR_TRANSPORT_GOOD;
+ }
+
+ if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
+ /*
+ * sure. whatever. not like we can stop the user from popping
+ * the media out of the device (no locking doors, etc)
+ */
+ return USB_STOR_TRANSPORT_GOOD;
+ }
+
+ US_DEBUGP("usbat_flash_transport: Gah! Unknown command: %d (0x%x)\n",
+ srb->cmnd[0], srb->cmnd[0]);
+ info->sense_key = 0x05;
+ info->sense_asc = 0x20;
+ info->sense_ascq = 0x00;
+ return USB_STOR_TRANSPORT_FAILED;
+}
+
+int init_usbat_cd(struct us_data *us)
+{
+ return init_usbat(us, USBAT_DEV_HP8200);
+}
+
+int init_usbat_flash(struct us_data *us)
+{
+ return init_usbat(us, USBAT_DEV_FLASH);
+}
+
+int init_usbat_probe(struct us_data *us)
+{
+ return init_usbat(us, 0);
+}
+
+/*
+ * Default transport function. Attempts to detect which transport function
+ * should be called, makes it the new default, and calls it.
+ *
+ * This function should never be called. Our usbat_init() function detects the
+ * device type and changes the us->transport ptr to the transport function
+ * relevant to the device.
+ * However, we'll support this impossible(?) case anyway.
+ */
+int usbat_transport(struct scsi_cmnd *srb, struct us_data *us)
+{
+ struct usbat_info *info = (struct usbat_info*) (us->extra);
+
+ if (usbat_set_transport(us, info, 0))
+ return USB_STOR_TRANSPORT_ERROR;
+
+ return us->transport(srb, us);
+}
git://git.onelab.eu / linux-2.6.git / blobdiff